<template>
  <HomePanel title="人气推荐" sub-title="人气爆款 不容错过" ref="target">
    <ul class="goods-list">
      <li v-for="item in goods" :key="item.id">
        <RouterLink to="/">
          <img v-imgLazy="item.picture" alt="" />
          <p class="name">{{ item.title }}</p>
          <p class="desc">{{ item.alt }}</p>
        </RouterLink>
      </li>
    </ul>
    <template #right>
      <xtx-more></xtx-more>
    </template>
  </HomePanel>
</template>

<script>
import HomePanel from './home-panel'
import { findHot } from '@/api/home'
import { ref } from 'vue'
// import (onMounted, ref) from 'vue'
// 导入组件懒加载(vueuse插件)
// import { useIntersectionObserver } from '@vueuse/core'
// 导入封装的组件监控方法
import { cpLazy } from '@/hooks'
export default {
  name: 'HomeHot',
  components: { HomePanel },
  // data () {
  //   return {
  //     goods: []
  //   }
  // },
  // async created () {
  //   const data = await findHot()
  //   this.goods = data.result
  // }
  setup () {
    // 1.定义响应式数据
    const goods = ref([])
    // 2.定义函数 函数内部调用接口函数
    async function getList () {
      const res = await findHot()
      goods.value = res.result
    }
    // 3. onMounted中调用getList
    // onMounted(() => {
    //   getList()
    // })

    // 监控元素是否进入可视区
    // return是一个对象, 所以解构
    const { target } = cpLazy(getList)
    return {
      goods, target
    }
  }
}
</script>

<style scoped lang='less'>
.goods-list {
  display: flex;
  justify-content: space-between;
  height: 426px;
  li {
    width: 306px;
    height: 406px;
    img {
      width: 306px;
      height: 306px;
    }
    p {
      font-size: 22px;
      padding-top: 12px;
      text-align: center;
    }
    .desc {
      color: #999;
      font-size: 18px;
    }
  }
}
</style>
